Ventilating system



May 5, 1931.

c. o. Gur-:RNSEY VENTILATING SYSTEM 2 Sheets-Sheet l Filed Aug. 28. 1928 May 5, 1931. c. o; GuERNsEY VENTILATING SYSTEM Filed Aug. 28. 1928 2 Sheets-Sheet 2 Patented May 5, 1931 trier.

VENTILATING- SYSTEM Application filed August 28, 1928. Serial No. 302,583.

This invention relates to exhaust means for internal combustion engines, and is concerned more particularly with installations on railway vehicles employing a prime mover as the power source.

An object of my inventionv is to provide means whereby discharge of the exhaust gases from an internal combustion engine may be accelerated.

Another object is to provide means whereby the gases used as a cooling medium for the radiator of an internal combustion engine may be used to facilitate the removal of exhaust gases.

Still another object is to provide means whereby the. atmospheric gases in the engine room may be drawn up through means surrounding the exhaust pipe, thus tending to cool the exhaust gases.

Yet another object is to provide means whereby suitable ventilation is maintained in the engine room.

Other objects will appear hereinafter.

In the drawings, representing one modification of the invention;

Fig. l is a side elevation of the device according to my invention arranged in the cab of a self-driven car, part of the car being broken away to show the details of the invention and parts being shown in section, while Fig. 2 is a transverse View taken on line 2 2 of Fig. l, parts being shown in section.

At l is shown the motor provided with exhaust manifolds 2. As willbe readily understood, these manifolds may be of any number and take any desirable form without departing from the sco-pe of the invention.

Pipes 3 conduct exhaust gases from the manifolds 2 to a header assembly 4, arranged 40 exteriorly of the car roof 5. I From thence connection is made to mufler G which in the present instance comprises ran annular U- shaped channel 7 to which connection is tangentially made to header 4. A ring-like 45 member 8 forms the inner wall of the channel. This member is so arranged that a circumferential passageway 7a is left at its top.

Arranged in 50 channel 7 is a the opening formed by the fan 9, which is propelled by suitable means, such as motor l0 and which draws in the cooling air from the exterior of the car through the radiator elements 1l indicated by the dotted'lines in Fig. 2. The radiator is enclosed in a casing or shroud l2. lt is to be understood however, that the fan and radiator may have any desired form and location without departing from the essential features of my invention.

Arranged aroundthe exhaust pipes 3 are 60 pipes or shrouds 14, which at their lower ends surround and are spaced from the manifolds 2, thus opening into the engine room. At their upper ends the shrouds 14 open into a manifold l5, bymeans of which they are G5 connected to the passageway between the radiators and the fan.

n As will be seen, the exhaust gases from engine l are discharged into muliier 6, and swirl around passageway 7. The fan 9 draws Tt" air through the radiators 1l, and due to the resistance thereof and the suction created by fan 9, a slight vacuum is created in the space between the radiators and the fan. This causes air to be drawn up from ythe engine 73 room through shrouds 14 and through the fan 9', thus Ventilating the engine room. To some extent the exhaust pipes 3 and manifolds 2 are cooled bythe flow of air through the shroud thus decreasing the back pressure. 5U The. exhaust gases are carried out to the atmosphere along with the airy passage through the fan. t

Numerous modiiic'ations will be apparent to those skilled inthe art to which this invention appertains and it is intended that it be limited only by the scope of the'appended claims. n Y

I claim:

l; In a motor-driven car having a radiator for cooling the engineof the car, an exhaust manifold for the engine, exhaust means lead- Y ing from said manifold to a connection with a muier, means rspaced from the radiator 95 coils for drawing air through them from the exterior, a closure about said exhaust means and discharging into a passageway between the radiator and the last mentioned means, air being drawn through the closure to cool the exhaust cooling the radiator.

2. In a motor-driven car having a radiator for cooling the engine of the car, exhaust manifolds for the engine, pipes leading from said manifold, a fan spaced from the radiator` for drawing air from the exterior through the coils of the radiator, Vand shrouds about said pipes discharging into a passageway between the fan and radiator, air being drawn through the shrouds to cool the pipes as an incident to cooling the radiator.

3. In a motor-driven car, a main car-interior, an engine-room, an engine in said engine-room, a cooling system for said engine at the top of the car-interior, said cooling system comprising a radiator and a suctionan spaced from the radiator for drawing air from the exterior through the radiator coils to cool them, a closure partly surrounding said cooling system, exhaust means on said engine comprising'exhaust pipes, and closures surrounding said pipes, and communieating` with said iirst-mentioned closure at an opening between the fan and radiator, the flow of air past the opening drawing air from the engine room around the pipes to cool the saine and discharging it through the fan. 4. In a motor-driven car having a radiator for cooling the engine of the car, exhaust means for the engine comprising exhaust pipes, means spaced from the radiator for i es as an incident to drawing air from the exterior through the l coils of the radiator, and Vshrouds about said pipes discharging into a passageway between said last-mentioned means and the radiator, air being drawn through the shrouds to cool the pipes as an incident to cooling the radiator.

5. In combination with an engine compart- V ment, an engine therein having an exhaust manifold, an exhaust conduit leading from the manifold, a radiator, a Vshroud enclosing the radiator and having an inlet and an outlet, means for ejecting air from the shroud located adjacent the outlet, said radiator being disposed between the inlet and said air exhausting means, and a second shroud surrounding those portions of the exhaust conduit in the engine compartment and communicating at one end with the iirst-named shroud between the radiator and said air exhausting means, the opposite end of the second-named shroud communicating with the motor compartment.

CHARLES O. GUERNSEY. 

